Physics

posted by .

An object that is 27 cm in front of a convex mirror has an image located 18 cm behind the mirror. How far behind the mirror is the image located when the object is 19 cm in front of the mirror?

  • Physics -

    Compute the focal length (f) from the object and image information provided.

    Then use that f (which will be negative for a convex mirror) to compute the new image position when the object is moved.

    1/27 - 1/18 = 1/f
    2/54 - 3/54 = -1/54 = 1/f
    f = -54 cm


    1/19 + 1/Di = -1/54
    1/Di = -1/54 - 1/19 = -0.007115
    = -1/14.05
    Di = -14.05 cm
    which means 14.05 cm behind the mirror

  • Physics -

    An object that is 29 cm in front of a convex mirror has an image located 13 cm behind the mirror. How far behind the mirror is the image located wen the object is 15 cm in front of the mirror?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    An object that is 19 cm in front of a convex mirror has an image located 24 cm behind the mirror. How far behind the mirror is the image located when the object is 12 cm in front of the mirror?
  2. physics

    A 4.5 cm tall object is placed 20 cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.5 cm tall. (a) What type of mirror should be used?
  3. physics

    An object is located 16.8 cm in front of a convex mirror, the image being 11.5 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location. The image of this …
  4. physics

    An object is located 16.8 cm in front of a convex mirror, the image being 11.5 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location. The image of this …
  5. Physics

    An object that is 32 cm in front of a convex mirror has an image located 17 cm behind the mirror. How far behind the mirror is the image located when the object is 24 cm in front of the mirror?
  6. Physics

    An object that is 32 cm in front of a convex mirror has an image located 17 cm behind the mirror. How far behind the mirror is the image located when the object is 24 cm in front of the mirror?
  7. Physics

    A mirror produces an image that is located 50.0 cm behind the mirror, when the object is located 5.50 cm in front of the mirror. (a) What is the focal length of the mirror?
  8. physics

    A convex spherical mirror has a focal length of -20 cm. An object is placed 30 cm in front of the mirror on the mirror's axis. Where is the image located?
  9. Physics please help

    An object that is 31 cm in front of a convex mirror has an image located 16 cm behind the mirror. How far behind the mirror is the image located when the object is 24 cm in front of the mirror?
  10. Physics (Mirror Rays)

    3. When an object is located very far away from a convex mirror, the image of the object is 18 cm behind the mirror. Using a ray diagram drawn to scale, determine where the image is located when the object is placed 9.0 cm in front …

More Similar Questions